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EWG's Tap Water Database — 2019 UPDATE

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Benzo[a]pyrene

Miramar (East & West) Plants

Benzo[a]pyrene is a polycyclic aromatic hydrocarbon, or PAH, released from combustion of fossil fuels and waste incinerators. PAHs increase the risk of cancer; damage the immune, nervous and reproductive systems; and can harm developing fetuses.

 

13

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND10ND
2014ND40ND
2015ND20ND
20160.00600 ppb21ND - 0.0120 ppb
2017ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.007 ppb

The EWG Health Guideline of 0.007 ppb for benzo[a]pyrene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 0.2 ppb

The legal limit for benzo[a]pyrene, established in 1992, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to PAH exposure.

ppb = parts per billion

All test results

Date Result
2012-09-13ND
2012-09-13ND
2013-09-10ND
2014-09-09ND
2014-09-09ND
2014-11-19ND
2014-11-19ND
2015-09-09ND
2015-09-10ND
2016-09-130.0120 ppb
2016-09-13ND
2017-09-29ND
2017-09-29ND